Determination of current and candle power curves of the alternating current arc under impressed voltage of various wave forms . Print 4. 17 oast iron hub, d, and secured by the screws, e. TJae slits,a, b and c, are spaced 120 degrees apart and may be adjust-ed in size by moving the two disos Ielative to each maximuia opening is as shown. Referring again to Print 2, these discs are soplaced that when one of the three slits of h is directlybetween the screen, f, and the standard light, b, oneslit of disc, g, is 60 degrees from this position. Thatis, at this position of h, the line join
Determination of current and candle power curves of the alternating current arc under impressed voltage of various wave forms . Print 4. 17 oast iron hub, d, and secured by the screws, e. TJae slits,a, b and c, are spaced 120 degrees apart and may be adjust-ed in size by moving the two disos Ielative to each maximuia opening is as shown. Referring again to Print 2, these discs are soplaced that when one of the three slits of h is directlybetween the screen, f, and the standard light, b, oneslit of disc, g, is 60 degrees from this position. Thatis, at this position of h, the line joining the arc andthe screen would cut disc, g, midway between tvo , as the shaft, 1, is rotated, light is admitted tothe screen, f, alternately by the standard light and thearc. The purpose of this is, as suggested above, toilluminate the effects of the two different colors oflight, and thus to obtain a balance on the screen. Sincethese slits are small, the light passing through them andbeing measured repxesents practically the instantaneousvalues, as the current of the arc passed through a , one positio
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Keywords: ., bookcentury1900, bookdecade1900, bookiddeterminatio, bookyear1905
